1071557697 has 8 divisors (see below), whose sum is σ = 1632849856. Its totient is φ = 612318672.

The previous prime is 1071557681. The next prime is 1071557699. The reversal of 1071557697 is 7967551701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1071557697 - 2⁴ = 1071557681 is a prime.

It is a super-2 number, since 2×1071557697² = 2296471795999887618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071557699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25513258 + ... + 25513299.

It is an arithmetic number, because the mean of its divisors is an integer number (204106232).

Almost surely, 2^1071557697 is an apocalyptic number.

It is an amenable number.

1071557697 is a deficient number, since it is larger than the sum of its proper divisors (561292159).

1071557697 is an equidigital number, since it uses as much as digits as its factorization.

1071557697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51026567.

The product of its (nonzero) digits is 463050, while the sum is 48.

The square root of 1071557697 is about 32734.6559016587. The cubic root of 1071557697 is about 1023.3052134176.

The spelling of 1071557697 in words is "one billion, seventy-one million, five hundred fifty-seven thousand, six hundred ninety-seven".